Min Deletions to Almost Sorted
An array of integers is almost sorted if at most one element can be deleted from it to make it perfectly sorted, ascending. For example, arrays [2, 1, 7], [13], [9, 2] and [1, 5, 6] are almost sorted because they have 0 or 1 elements out of place. The arrays [4, 2, 1], [1, 2, 6, 4, 3] are not because they have more than one element out of place. Given an array of n unique integers, determine the minimum number of elements to remove so it becomes almost sorted.
Complete the function minDeletions in the editor.
minDeletions has the following parameter(s):
int arr[n]: an unsorted array of integers
Returns
int: the minimum number of items that must be deleted to create an almost sorted array
1Example 1
Remove 2 to get arr' = [3, 4, 5, 1] or remove 7 to get arr' = [3, 4, 2, 5], both of which are almost sorted. The minimum number of elements that must be removed in this case is 1.
Constraints
Limits and guarantees your solution can rely on.
1 ≤ n ≤ 1051 ≤ arr[i] ≤ 109- All elements of
arrare distinct.